Riga Building Series Cheat Sheet

The classification every Riga local already knows from apartment listings, applied to AC installation. Full detail per series in the building series database; exact sizing for your room in the AC size calculator.

To save as PDF: press Ctrl/Cmd + P and choose "Save as PDF" — the page is print-optimized.

Series	Walls & facade	Drilling · ceiling	Typical unit*	Watch for
Hruščovka (316./318. sērija u.c.) 4–5 floors	Brick (316/318 series); some panel-era variants exist	easy · 2.5 m	2.0 kW	Era wiring: in unrenovated buildings, have an electrician confirm the circuit (or add a dedicated line) before installing.
602. sērija 9 (sometimes 6) floors	Load-bearing keramzīt-concrete wall panels, reinforced-concrete floor slabs	moderate · 2.5 m	2.0 kW	The white small-tile facade chips around holes — the installer should start with a tile bit; upper floors may need rope access.
119. sērija 9 (also 6 or 10) floors	Reinforced-concrete wall panels, decorative tile finish on some external panels	moderate · 2.7 m	2.0 kW	Drilling can hit rebar in the reinforced-concrete panels — installers reposition a few centimetres rather than cut through.
Renovēta / nosiltināta sērijveida māja As the original series (typically 5 or 9) floors	Original panel or brick + external insulation system (typically 10–15 cm mineral wool or EPS under render)	hard · 2.5 m	2.0 kW	Strictest approvals of any series: brackets must reach the load-bearing wall through the insulation, and every penetration must be sealed.
Jaunais projekts (new build, 2000s+) Varies (typically 3–12) floors	Monolithic reinforced concrete frame with block infill, or masonry; ventilated or rendered facades	moderate · 2.7 m	2.0 kW	Read the developer/HOA rules first — many designate exact outdoor-unit zones, and some projects have pre-installed line stubs (zero new holes).

*Recommended unit class for a reference 18 m² living room with average sun, computed by the same engine as the calculator — your room will differ.